Plastic particle extruder
By designing an inclined extrusion channel and an air blowing mechanism, the problems of insufficient flowability and uneven mixing in plastic granule extrusion devices were solved, achieving rapid cooling and uniform mixing of materials and improving product quality.
Patent Information
- Application Number
- CN202422923635.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-11-28
AI Technical Summary
In existing plastic pellet extrusion equipment, the extrusion channel of the extrusion die is designed to be relatively flat, resulting in insufficient plastic flowability, premature cooling, and incomplete mixing of additives, which affects product quality.
The design incorporates inclined extrusion channels and outlets, along with an air blowing mechanism. This mechanism utilizes a blower and air blowing pipes to cool and mix the material, thereby improving material flow rate and mixing uniformity.
It effectively prevents materials from cooling prematurely, reduces separation and precipitation, improves material mixing, and enhances product quality.
Smart Images
Figure CN223590040U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of plastic processing, especially relates to a plastic particle extruder. BACKGROUND
[0002] The plastic particle extruding device is used for heating and extruding plastic particles and various additives to change the chemical parameters of the plastic and improve the quality of the final product. It mainly consists of a hopper, a screw, a heating zone, a mold and a cooling system. After the plastic particles enter the hopper, they are pushed and mixed by the screw, melted by heating, then extruded through the extrusion channel of the extrusion die, and finally cooled and solidified.
[0003] In the existing plastic particle extruding device, the extrusion channel of the extrusion die is designed relatively gently, which leads to insufficient flowability of the plastic during extrusion. This causes the plastic strip to cool down too early during extrusion, and the additives and plastic fail to mix completely with the additives during the extrusion process, resulting in the precipitation of additives from the extrusion channel and seriously affecting the quality of the final product. SUMMARY
[0004] Therefore, it is necessary to provide a plastic particle extruder to solve the technical problems in the background art.
[0005] The technical solution of the utility model to solve the above technical problems is as follows:
[0006] A plastic particle extruder comprises an extruding piece and an extrusion die, the front end of the extrusion die is close to one end of the extruding piece, the front end of the extrusion die is fixedly connected with the extruding piece and communicates with each other, the extrusion die is sequentially provided with an extrusion channel and an extrusion outlet in the front-to-back direction, the extruding piece is used for extruding materials into the extrusion channel and the extrusion outlet, and the extrusion channel and the extrusion outlet are inclined downward from front to back.
[0007] In one embodiment, the flow area of the extrusion channel is larger than that of the extrusion outlet, and the flow area gradually decreases from the front end of the extrusion outlet to the rear end of the extrusion outlet in the front-to-back direction.
[0008] In one embodiment, the rear end of the extrusion outlet is provided with a molding nozzle communicating with the extrusion outlet.
[0009] In one embodiment, the plastic particle extruder further comprises a blowing mechanism and a first driver, the blowing mechanism comprises a blower, a blowing pipe and a mounting bracket, the mounting bracket is located behind the extrusion die, both sides of the mounting bracket are provided with a bearing, both ends of the blowing pipe are mounted on the two bearings, the blower is in communication with the blowing pipe, the surface of the blowing pipe is provided with a plurality of blowing holes, the blowing holes are arranged in sequence along the left-right direction, the blowing holes are arranged towards the extrusion port, and the first driver is in driving connection with the blowing pipe for driving the blowing pipe to rotate in the inner ring of the bearing.
[0010] In one embodiment, the plastic particle extruder further comprises a second driver, the second driver is in driving connection with the bearing for driving the blowing pipe to slide up and down along the mounting bracket.
[0011] In one embodiment, the mounting bracket is provided with a sliding groove, and the bearing is in sliding fit with the sliding groove.
[0012] The plastic particle extruding device has the advantages that: the molten material can be sent into the inclined extruding channel and the discharge port through the extruding piece, the inclined extruding channel and the discharge port increase the flow speed of the material, can effectively avoid the material from being cooled too early in the extruding process, can also reduce the separation between the materials, increase the mixing effect of the materials, reduce the generation of precipitates, and improve the extruding quality of the materials. BRIEF DESCRIPTION OF DRAWINGS
[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced below, and it should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor.
[0014] Figure 1 It is an internal perspective structure schematic view of the plastic particle extruder of one embodiment;
[0015] Figure 2 It is a structure schematic view of the extrusion die of one embodiment; Figure 1 It is an enlarged structure schematic view of A;
[0016] Figure 3 It is a structure schematic view of the extrusion die of one embodiment;
[0017] Figure 4 It is a cross-sectional structure schematic view of the extrusion die of one embodiment.
[0018] In the drawings, 10, extrusion; 20, extrusion die; 21, extrusion channel; 22, extrusion port; 23, molding nozzle; 30, air blower; 31, mounting bracket; 311, chute; 32, bearing; 33, blowing pipe; 34, blowing hole; 40, first driver; 41, second driver. DETAILED DESCRIPTION
[0019] As Figures 2-4 shown, a plastic particle extruder includes: an extrusion 10 and an extrusion die 20, the front end of the extrusion die 20 is fixedly connected with the extrusion 10 and communicates with each other, the extrusion die 20 is provided with an extrusion channel 21 and an extrusion port 22 in turn along the front-to-back direction, the extrusion 10 is used for extruding material into the extrusion channel 21 and the extrusion port 22, the extrusion channel 21 and the extrusion port 22 are inclined downward from front to back, in use, after the material to be processed is put into the plastic particle extruder, the stirring and heating device of the plastic particle extruder can stir the material and melt the material, after the extrusion 10 extrudes the melted material into the extrusion die 20, the melted material flows quickly in the inclined extrusion port 22, thereby reducing the time of the extrusion die 20 extruding the material, avoiding the extruded material from cooling too early, and the quick flow of the material can reduce the risk of separation between the materials and reduce the generation of precipitates.
[0020] In this embodiment, as Figure 4 shown, the flow area of the extrusion channel 21 is greater than the flow area of the extrusion port 22, which can improve the flow rate of the material during the flow process, so that the material flows more uniformly into the extrusion port 22; along the front-to-back direction, the width of the front end of the extrusion port 22 to the rear end of the extrusion port 22 gradually decreases, when the material passes through the gradually narrowing channel, the density and uniformity of the material can be improved, the defects such as bubbles and cavities that may be generated during the extrusion process are reduced, which helps to improve the overall quality of the product.
[0021] In this embodiment, as Figure 1 and Figure 2 shown, the rear end of the extrusion port 22 is provided with a molding nozzle 23, and the molding nozzle 23 communicates with the extrusion port 22. The material extruded from the extrusion port 22 can be shaped through the molding nozzle 23 to form the required shape.
[0022] In this embodiment, as Figure 1As shown, the plastic particle extruder further comprises a blowing mechanism and a first driver 40. The blowing mechanism comprises a blower 30, a blowing pipe 33 and a mounting bracket 31. The mounting bracket 31 is located behind the extrusion die 20. The mounting bracket 31 is provided with a bearing 32 on each of the left and right sides. The left and right ends of the blowing pipe 33 are respectively mounted on the two bearings 32. The blower 30 is in communication with the blowing pipe 33. The surface of the blowing pipe 33 is provided with a plurality of blowing holes 34. The blowing holes are sequentially arranged in the left-right direction. The blowing holes 34 are arranged towards the extrusion opening 22. The first driver 40 is drivingly connected with the blowing pipe 33 for driving the blowing pipe 33 to rotate in the inner ring of the bearing 32. Specifically, the blower 30 blows air into the pipe. The air discharged from the blowing holes 34 cools the material extruded from the extrusion opening 22. The plurality of blowing holes 34 can ensure that the uniform airflow covers the surface of the extruded part 10, thereby shortening the cooling period. The first driver 40 can drive the blowing pipe 33 to rotate in the inner ring of the bearing 32, so as to change the blowing direction of the blowing holes 34, thereby meeting the requirements of different materials and extrusion conditions. The first driver 40 is a motor. The motor can drive the blowing pipe 33 to rotate in the inner ring of the bearing 32.
[0023] In the embodiment, as shown in Figure 1 and Figure 2 The plastic particle extruder further comprises a second driver 41. The second driver 41 is drivingly connected with the bearing 32 for driving the blowing pipe 33 to slide up and down along the mounting bracket 31. The mounting bracket 31 is provided with a sliding groove 311. The bearing 32 is slidingly matched with the sliding groove 311. Specifically, the second driver 41 is an electric push rod. The second push rod can drive the bearing 32 to slide up and down in the sliding groove 311, so as to adjust the height between the blowing pipe 33 and the extrusion opening 22, thereby meeting the requirements of different materials and extrusion conditions. Due to the presence of the sliding groove 311, the smoothness of the up-down movement of the bearing 32 can be improved.
Claims
1. A plastic pellet extruder comprising: The extrusion part (10) and the extrusion die head (20), the front end of the extrusion die head (20) is fixedly connected with the extrusion part (10) and communicates with each other, the extrusion die head (20) is sequentially provided with an extrusion channel (21) and an extrusion outlet (22) from front to back, and the extrusion part (10) is used for extruding material into the extrusion channel (21) and the extrusion outlet (22), characterized in that the extrusion channel (21) and the extrusion outlet (22) are inclined downward from front to back.
2. The plastic pellet extruder of claim 1, wherein, The flow area of the extrusion channel (21) is greater than that of the extrusion outlet (22), and the flow area gradually decreases from the front end of the extrusion outlet (22) to the rear end of the extrusion outlet (22) in the front-to-back direction.
3. The plastic pellet extruder of claim 1, wherein, The rear end of the extrusion outlet (22) is provided with a forming nozzle (23) communicating with the extrusion outlet (22).
4. The plastic pellet extruder of claim 1, wherein, Further comprising: The blowing mechanism and the first driver (40), the blowing mechanism comprises: a blower (30), a blowing pipe (33) and a mounting bracket (31), the mounting bracket (31) is located behind the extrusion die head (20), the left and right sides of the mounting bracket (31) are provided with a bearing (32), the left and right ends of the blowing pipe (33) are mounted on the two bearings (32), the blower (30) communicates with the blowing pipe (33), the surface of the blowing pipe (33) is provided with a plurality of blowing holes (34), a plurality of the blowing holes (34) are sequentially arranged in the left-right direction, the blowing holes (34) are arranged towards the extrusion outlet (22), and the first driver (40) is drivingly connected with the blowing pipe (33) for driving the blowing pipe (33) to rotate in the inner ring of the bearing (32).
5. The plastic pellet extruder of claim 4, wherein, Further comprising: The second driver (41) is drivingly connected with the bearing (32) for driving the blowing pipe (33) to slide up and down on the mounting bracket (31).
6. The plastic pellet extruder of claim 4, wherein, The mounting bracket (31) is provided with a sliding groove (311), and the bearing (32) is slidingly matched with the sliding groove (311).